Dampening apparatus for rolls of paper



' (No Model.) 3 Sheets-Sheet 1.

W. SCOTT. DAMPENING APPARAIUS FOR ROLLS OF PAPER. No. 404,505. PatentedJune 4, 1889.

N. PETERS. Phnln-Lnmgrnphor. Waahmglon, n. c.

(No Model.) 3 Sheets-Sheet2. W. SCOTT. DAMPENING APPARATUS FOR ROLLS OFPAPER.

No. 404,505. Patented June 4, 1889..

N, PETERS. Pnomumo m hu. Wuhingwm D, C,

(No Model.) 3 Sheets-Sheet 3..

W., SCOTT.

DAMPENING APPARATUS FOR ROLLS OF PAPER.

No. 404,505. Patented June 4; 1889.

N. warms. vnmmo m hur, Washingto shaft II and levers G until the roll ofpaper UNITED STATES PATENT OFFICE.

IVALTER SCOTT, OF PLAINFIELD, NElV JERSEY.

DAMPENING APPARATUS FOR ROLLS OF PAPER.

SPECIFICATION forming part of Letters Patent No. 404,505, dated June 4,1889.

$erial No. 288,071. (No model.)

To all whom it may concern:

Be it known that LWALTER 800m, of Plainfield, in the county of Union andState of New Jersey, have invented an Improvement in Dampening Apparatusfor Rolls of Paper, of which the following is a specification.

In this apparatus the web of paper is drawn off the roll and dampened bydirect contact with the dampening;cylinder, and then it is wound uponanother roll as the dampening progresses.

My present improvements relate to devices for regulating the quantity ofwater supplied to the paper by the cylinder with which it comes incontact.

In the drawings, Figure l is a plan view of the apparatus. Fig. 2 is anelevation of the same; and Fig. 3 is alongitudinal section, and Fig. 4is a detached view, of the lever-handle and swinging-block, that is usedin connection with the pressure applied to the elastic roll thatregulates the quantity of water remaining' upon the surface of thewetting-cylinder.

The main frames A are adapted to the .reception of the shafts and otherparts of the mechanism, hereinafter described.

B is the shaft or axis of the roll of paper, the ends of which axis arereceived into jaws 0 upon the frame A, and a friction-strap D andweighted lever-E are applied to a pulley upon the axisBto prevent theroll of paper unwinding too rapidly.

F is the axis or roll upon which the paper is wound,and the same isreceived into jaws at the ends of the levers G, which extend from thecross-shaft H, and upon this crossshaft is a toothed sector I, actedupon by a pinion, and shaft J, and the wheel K, and friction-clamp L.These parts correspond to those shown in Letters Patent No. 272,588,granted to me February 20, 1883, and it is to be understood that thefriction-clamp L serves to keep the roll of paper toward the wetting andwinding cylinder M, but it allows the levers G and cross-shaft II tomove as the roll of paper increases in diameter, and the pinionand-sector I are used for swinging the is brought down to the floor orplatform to be rolled away from the machine.

The wetting-cylinder M is above the trough N, that contains the water orliquid employed in wetting the paper, and the lower part of the cylinderM is in the water of said trough. I prefer to apply the power to theshaft N by the pulley O and belt, so as to revolve the wetting cylinderM, and also rotate the roll of paper that is wound upon the axis or rollF. It is usual to provide fast and loose pulleys upon the shaft N, and abeltshifter P, and also a brake Q, for stopping the rotation of the fastpulley and of the wetting-cylinder M.

and there is a cam S upon a cross-shaft S, having a lever-handle S bywhich the shaft can be partially rotated to cause the cam to act uponthe lower end of the brake-lever R and the brake Q to stop the rotationof the wetting and winding apparatus.

The wetting-cylinder M is rotated in the direction indicated by thearrow, and at the ascending side of the cylinder I prefer to apply thecross-bar T, preferably of wood, which forms a scraper to remove surplusmoisture from the surface of the wetting-cylinder M. This cross-bar T isset into a metal holder T, hung at its end by the arms T from the frameA, and there are set-screws U for pressing the cross-bar or scraper moreor less closely into contact with the surface of the cylinder M.

Above the scraper T is a roller or cylinder V, preferably ofindia-rubber npon the shaft V, and this is preferably hung by the armsor links V at the ends thereof, the upper ends of the links beingpivoted upon the frame A, and there is a cross-shaft 3, havingeccentrics or cams 4, that act against the links V to swing such linksand press the roller V more or less firmly against the wetting-cylinderM. The shaft 3 is provided at one end with the lever-handle 5, by whichtheshaft and cams can be turned to adjust the pressure of the roller Vagainst the cylinder M, and I provide a set-screw 6 for holding thelever-handle 5 and for accurately adjusting the pressure, such set-screwacting against one side of the lever-handle 5; but I prefer to use andhave represented a swinging block 7, pivoted to the lever 5 at one sideand against which the end of the set-screw 6 acts. By swinging thisblock 7 aside the lever-handle 5 can be moved toward the screw 6sufficiently to lessen the pressure of the rubber roll V against thewet- This brake Q is upon the lever-arm R, that is pivoted to the frameR,

tin g-cylinder M, and thereby p re vent the roller V becoming flattenedat the point of contact when the dampening apparatus is not in use. Ialso provide a clamp-bar 8, pivoted to the frame at 9 and passingthrough the clamp 10 upon the lever-handle 5, so that this leverhandlecan beheld thereby temporarily while adjusting the pressure of therubber roll V upon the wetting-cylinder M; but any suitable means may beused for adjusting the pressure of the roll V upon the cylinder M. It isto be understood that the adjustments hate to be made with accuracy, inorder that the quantity of moisture passing to the web of paper may bedetermined with reliability, because the moisture is taken up by thepaper while in contact with the cylinder M as it passes over the surfacethereof and is Wound upon the axis or roll F. As the paper passes fromthe roll B to the dampening-roll M it is guided by the roll 12, overwhich it passes, and by the stationary bar 13, that is above the web ofpaper, and the under surface of this bar 13 is rounded and provided withdiverging grooves, so that such bar acts as a spreader to open out andflatten any wrinkles or folds in the web of paper. Usually the roll ofpaper that is to be wound up will be in contact with thedampening-cylinder M; but, if desired, this dampening-0y]inder M may beat a distance from the winding-up roll F sufficiently for theintroduction of another cylinder M, as shown in dotted lines, Fig. 3, towhich the power is to be applied, the parts of the dampening apparatusremaining unchanged.

In order to PIGXGIHJ the water that is kept back by the rubber rollerVpassing down the surface of the dampening-cylinder M and lodging againstthe cross-bar or scraper T, I prefer to introduce a deflecting-plate Pthat is fastened at its lower edge upon the holder T, and its upper edgerests against the surface of the dampening eylinder H below the point ofcontact therewith of the rubber roller V.

I claim as my invention- 1. The combination, with the dampeningcylinderM and water-trough N, of the crossbar or scraper T, holder T, andpivoted arms for supporting the holder, and means for regulating theproximity of the cross-bar T to the surface of the dampening-cylinder,substantially as set forth.

2. The combination, with the dampeningcylinder M and trough, the scraperT and holder T, of the elastic roller V and the hanging arms for thesame,.the cross-shaft 3, and cams and lever for applying more or lesspressure of the elastic roller upon the dampeningcylinder, substantiallyas set forth.

3. The combination, with the dampeningcylinder M and trough, of thecross-bar or scraper T and holder, the elastic roller V and itssuppoi'tinglinks, and the shaft 3, cams and lever-handle, anddeflecting-plate P substantially as specified.

4:- The lever-handle 5, swinging block 7, pivoted to the same, and theset-screw 6, in combination with the dampening-cylinder M, the cams 4t,cross-shaft 3, elastic roller V, and the links V by which the same issuspended, for applying pressure to the elastic roller V or relievingthe same by moving the swing- 1' ng block, substantially as set forth.

5. The combination, with the frame and the roll for the web of paper,and the roll upon which the dampened paper is wound, of the Water-troughN, dainpening-cylinder M, over which the paper passes, the groovedspreader 13, with which the web of paper passes in con tact to thedampeni1'1g-cylinder, and the driving-pulley for rotating thewinding-cylinder, and the brake for stopping the same and arresting themovement of the paper, substantially as set forth.

G. The combination, with the rollers for thp Web of paper, of thedampening-0y]inder and a water-trough for supplying the water, and anelastic roller and mechanism, substantially as specified, for pressingthe same against the dampening-cylinder to remove the surplus water,substantially as specified.

7. The combination, with the rolls for the web of paper, of awater-trough and a dam pening-cylinder receiving the water from the saidtrough, and an elastic roll for removing the surplus moisture, the saiddampeningcylinder also acting to give motion to the roll of paper as theweb is wound up, substantially as set forth.

Signed byme this 8th dayof October, 1888.

\VALTER SCOTT.

\VitneSscs: I

GEO. T. PINGKNEY, \VILLIAM G. More

